diff --git a/mapgen.lua b/mapgen.lua
index 1ebfa10..8426374 100644
--- a/mapgen.lua
+++ b/mapgen.lua
@@ -327,8 +327,8 @@ local function generate(p_minp, p_maxp, seed)
 					local room_px = math_floor((math_abs(fdx - half_pod.x) - 3) / room_size)
 					local room_py = math_floor(fdy / 5)
 					local room_pz = math_floor((math_abs(fdz - half_pod.z) - 3) / room_size)
-					room_type = math_floor((math_abs(room_pz * room_py * room_px * px * py * pz) % 17) / 3)
-					room_type_below = math_floor((math_abs(room_pz * (room_py - 1) * room_px * px * py * pz) % 17) / 3)
+					room_type = math_floor((math_abs(room_pz * 1000000 + room_py * 1000 + room_px) % 17) / 3)
+					room_type_below = math_floor((math_abs(room_pz * 1000000 + (room_py - 1) * 1000 + room_px) % 17) / 3)
 					if room_type_below == 1 and room_type == 3 then
 						room_type = 0
 					end
@@ -585,7 +585,7 @@ local function generate(p_minp, p_maxp, seed)
 	local t4 = os.clock()
 
 	vm:set_data(data)
-	minetest.generate_ores(vm, minp, maxp)
+	--minetest.generate_ores(vm, minp, maxp)
 	--vm:set_param2_data(p2data)
 	vm:set_lighting({day = 0, night = 0}, minp, maxp)
 	vm:update_liquids()